The significant interest in the islands in the Russian Arctic has been in terms of available oil reserves, which determine the direction of economic development and associated environmental risks for this sector of the Arctic in the near future. Kotelny Island is the largest island of the New Siberian Islands Archipelago included in the protected zone of the Lena Delta Nature Reserve, which is located at 76° N, washed from the west by the Laptev Sea, washed from the east by the East Siberian Sea in a permafrost zone, and characterized by harsh climatic conditions defined by the northeast winds that prevail in vegetative season. January sees temperatures ranging from −32 to −35 °C, and July from +6 to +8 °C, which causes a short growing season. Samples were taken between August 3 and 8, 2018 in 12 freshwater bodies where 210 taxa were revealed. Aquatic communities were dominated by zygnematophycean and diatom algae, grouped in the basins of two rivers and associated with the position on the island’s landscape, which suggests the influence of cold north-east winds, leading to the avoidance of habitats in open and high places, which was revealed by statistical methods and also confirms the high individuality of taxa composition. Bioindication methods showed that water bodies are slightly alkaline, with low ion concentrations, with the presence of sulfides in low-lying habitats, and average saturation with organic matter. The mesotrophic status of the studied water bodies was evaluated through an assessment and the type of nutrition in the communities of algae and cyanobacteria indicates they formed there as true autotrophs, which corresponds to the status of a protected area and can serve as a reference level for monitoring anthropogenic impact.

中文翻译：

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北极条件对雅库特勒拿三角洲野生动物保护区科捷尔尼岛藻类和蓝藻多样性形成以及淡水栖息地水质的影响

人们对俄罗斯北极岛屿的重大兴趣在于可用石油储量，这决定了北极该地区在不久的将来的经济发展方向和相关环境风险。科捷尔尼岛是新西伯利亚群岛中最大的岛屿，属于勒拿三角洲自然保护区保护区，位于北纬 76°，西边受拉普捷夫海冲刷，东边受东西伯利亚海冲刷。位于永久冻土带，气候条件恶劣，生长季节盛行东北风。一月的温度范围为 -32 至 -35 °C，七月的温度范围为 +6 至 +8 °C，这导致生长季节较短。 2018 年 8 月 3 日至 8 日期间，在 12 个淡水水体中采集了样本，发现了 210 个类群。水生群落以接合藻类和硅藻类为主，分布在两条河流的盆地，与岛屿景观的位置相关，这表明冷东北风的影响，导致栖息地避开开阔和高处，这是通过统计方法揭示的，也证实了类群组成的高度个性化。生物指示方法表明，水体呈弱碱性，离子浓度低，低洼生境中存在硫化物，有机物平均饱和度。通过评估评估了所研究水体的中营养状况，藻类和蓝藻群落的营养类型表明它们在那里形成了真正的自养生物，这与保护区的状况相对应，可以作为参考水平监测人为影响。